From 2c0a89f7dc64bc34df28dd05686b2f4f84ca33d7 Mon Sep 17 00:00:00 2001
From: RPRX <63339210+RPRX@users.noreply.github.com>
Date: Fri, 31 Mar 2023 22:39:57 +0000
Subject: [PATCH] REALITY protocol: Set the fourth byte as reserved

---
 go.mod                                | 2 +-
 go.sum                                | 4 ++--
 transport/internet/reality/reality.go | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/go.mod b/go.mod
index e60d2629..32a245bc 100644
--- a/go.mod
+++ b/go.mod
@@ -19,7 +19,7 @@ require (
 	github.com/seiflotfy/cuckoofilter v0.0.0-20220411075957-e3b120b3f5fb
 	github.com/stretchr/testify v1.8.2
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
-	github.com/xtls/reality v0.0.0-20230320153727-442d33ede91e
+	github.com/xtls/reality v0.0.0-20230331223127-176a94313eda
 	go.starlark.net v0.0.0-20230302034142-4b1e35fe2254
 	golang.org/x/crypto v0.7.0
 	golang.org/x/net v0.8.0
diff --git a/go.sum b/go.sum
index 1b7006a4..bf6a63d0 100644
--- a/go.sum
+++ b/go.sum
@@ -189,8 +189,8 @@ github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e h1:5QefA066A1tF
 github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e/go.mod h1:5t19P9LBIrNamL6AcMQOncg/r10y3Pc01AbHeMhwlpU=
 github.com/viant/assertly v0.4.8/go.mod h1:aGifi++jvCrUaklKEKT0BU95igDNaqkvz+49uaYMPRU=
 github.com/viant/toolbox v0.24.0/go.mod h1:OxMCG57V0PXuIP2HNQrtJf2CjqdmbrOx5EkMILuUhzM=
-github.com/xtls/reality v0.0.0-20230320153727-442d33ede91e h1:mUMY3ndB1zZVic4+EjvTWzm9ghdpbdHZC9RwR0CoFxU=
-github.com/xtls/reality v0.0.0-20230320153727-442d33ede91e/go.mod h1:rkuAY1S9F8eI8gDiPDYvACE8e2uwkyg8qoOTuwWov7Y=
+github.com/xtls/reality v0.0.0-20230331223127-176a94313eda h1:psRJD2RrZbnI0OWyHvXfgYCPqlRM5q5SPDcjDoDBWhE=
+github.com/xtls/reality v0.0.0-20230331223127-176a94313eda/go.mod h1:rkuAY1S9F8eI8gDiPDYvACE8e2uwkyg8qoOTuwWov7Y=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA=
 go.starlark.net v0.0.0-20230302034142-4b1e35fe2254 h1:Ss6D3hLXTM0KobyBYEAygXzFfGcjnmfEJOBgSbemCtg=
diff --git a/transport/internet/reality/reality.go b/transport/internet/reality/reality.go
index 90580056..6355687b 100644
--- a/transport/internet/reality/reality.go
+++ b/transport/internet/reality/reality.go
@@ -121,10 +121,10 @@ func UClient(c net.Conn, config *Config, ctx context.Context, dest net.Destinati
 		hello := uConn.HandshakeState.Hello
 		hello.SessionId = make([]byte, 32)
 		copy(hello.Raw[39:], hello.SessionId) // the location of session ID
-		binary.BigEndian.PutUint64(hello.SessionId, uint64(time.Now().Unix()))
 		hello.SessionId[0] = core.Version_x
 		hello.SessionId[1] = core.Version_y
 		hello.SessionId[2] = core.Version_z
+		binary.BigEndian.PutUint32(hello.SessionId[4:], uint32(time.Now().Unix()))
 		copy(hello.SessionId[8:], config.ShortId)
 		if config.Show {
 			fmt.Printf("REALITY localAddr: %v\thello.SessionId[:16]: %v\n", localAddr, hello.SessionId[:16])